Greene faced a possible life sentence and must serve at least 16 years in prison under South Carolina law. She still faces 38 charges of fraudulently obtaining drugs, Barnette said.

— Reuters

Stephanie Greene, 39, of Campobello, South Carolina is pictured in this undated handout police booking photo. Greene, a South Carolina mother who gave her infant daughter a lethal dose of morphine via her breast milk, was sentenced on April 4, 2014 to 20 years in prison, a prosecutor said.HANDOUT / Reuters